schema_plus doesn't work in jruby.
schema_plus doesn't work in jruby.

Reference: https://github.com/lomba/schema_plus/issues/58

--HG--
extra : rebase_source : 420e844c965be76dfe6bf2cc05a8fef4ea06d29f

moebooru/moebooru,euank/moebooru-thin,nanaya/moebooru,moebooru/moebooru,moebooru/moebooru,nanaya/moebooru,euank/moebooru-thin,nanaya/moebooru,moebooru/moebooru,moebooru/moebooru,nanaya/moebooru,euank/moebooru-thin,euank/moebooru-thin,nanaya/moebooru,euank/moebooru-thin